Improvement in steam-gage siphons



J'. S. CRITCHLEY. STEAM-GAGE SIPHON'.

No. 195,444. Patented S-ept.25, 1877.

Inl/en/br.

Wi/n 5/4/ PATENT OFFICE.

'JA ME S S. GRI'TGIEILEY, OF CLEVELAND, OHIO.

iiam' niaovsmsnr ln STEAM-GAGE SIPHONS.

Specification formingpartof Letters Patent No. I95,Q44. dated September25, 1877; application filed 7 June L9, 1877.

To all whom it may concern:

Be it known that I, JAMES S. ORITGHLEY,

of Cleveland, in the county of (Juyahoga and State of Ohio, haveinvented a certain new and Improved Steam-Gage Siphon and I do herebydeclare that the following is a full, clear, and complete descriptionthereof, reference being had to the accompanying drawings, making apartof the same.

The nature of my invention relates to a steam-gage siphon for steamgages or indicators; and the object of the same is to insure correctindication on the gage, and to prevent freezing up of the siphon andretarding the action of gage-indicator.

For a description of the same reference will be had to the drawings, inwhich Figure 1 is a view of the steam-gage siphon; Fig. 2, a verticalsection; Fig. 3, an end view.

Like letters of reference refer to like parts in the several views.

In the drawings, A represents a globe, in which is achamber,and to whichare connected two nozzles or pipes, B and (J, as seen in Figs. 1 and 2.To the nozzle B is attached a steampipe, (indicated by the dotted linesB,) and extending to the boiler, which brings the chamber D ot the globein open communication with the boiler. 1n the nozzle 0 is a cock, E, andto said nozzle 0 is connected apipe, (indicated by dotted lines G,)which extends to the steamgage, and communicates with the spring pistonor diaphragm of such gage as that. with which the connection is made; myinvention being applicable to any steam-pressure gage provided with theordinary requisite appendages and mechanism.

The attachment of the pipes to the nozzles B C may be done in the usualmanner.

In the chamber Dv is a siphon, F, (which may be separate or cast withit, so as to form part of the chamber,) one limb of which extends intothe bore of the nozzle B, so as to be in open relation with it, and thepipe extending to the boiler, as seen in Fig. 2. The short limb to ofthe siphon opens into the chamber D, and the conduit G also opens intothe said chamber and into the pipe extending to the steam gage orindicator. This conduit G or passage is opened and closed by the cock E,as the nature of the case may require.

The practical operation and advantages of my improvement are as follows:After the connection of my steam-gage siphon is made with the boiler andthe steam-gage, the steam as it is generated passes through theconnectingpipe and siphon F into the chamber 1). The

exterior and interior of this chamber may be of any suitable shape, soas to offer a large condensing-surface; hence, as the steam first entersthe chamber it becomes condensed, and the (product) water is forced bythe steam, as the globe A becomes heated, from the chamber, through thepassage G and connectingpipe, to the steam-pressure gage, this wateracting upon the spring, diaphragm, or other device usually connectedwith the ordinary appendages or devices of such steam-gages, for thepurpose of acting upon the pointer or index to show the steam-pressure.The water which has been carried by the action of steam from the chamberD to act on the steam-gage, as before mentioned, is held or forced up inthe gage by the pressure of steam, thus interposing a stratum of waterbetween the devices, before mentioned, of the steam-gage, and the columnof steam in the connections with the boiler. The object of this is sowell understood in the art that explanation may not be here required.

In case the condensation in the chamber is too rapid or becomes filled,the excess of water will be drawn oil from the chamber D through thesiphon, and returned through the connecting-pipe to the boiler until thewater falls below the outlet a of the siphon. After the boiler is atrest and cooled off, there will be, to a certain extent, a vacuum formedin the boiler, which will draw off the water in the chamber D throughthe siphon; hence in cold and frosty weather there will be no injury tothis steam-gage siphon or its connections with the boiler by freezingand bursting or closing up of the passage of the connection, which ineither case would prevent the steam gage or indicator from working untilthe obstructions of ice were removed and repairs made. Theseobstructions and casualties occur in the use of the ordinary siphon forthis purpose.

In making the connections with my invention it is not necessary to placeany water either in the chamber or siphon or cell to insure its correctaction, as the condensation of the first generation of steam from theboiler will be suflicient to supply the requisite amount of water in thechamber 1), as and for the object before mentioned; but in using theordinary siphon it is necessary, first, before the connections are madewith the boiler and steam-gage, to fill the coil or siphon partiallywith water, which, not being drawn off, as may be with my invention,will in certain states of the weather become frozen up and liable toburst, thereby arresting the operation of the steam-gage.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In steam-gage siphons, the chamber D and siphon F, in combinationwith the nozzles or pipes B G, substantially as and for the purpose setforth.

2. The siphon F, chamberrD, provided with one or more nozzles or pipes,in combination with the cock E, substantially in the manner asdescribed, and for the purpose specified.

3. A steam-gage siphon, consisting of a siphon inclosed within a chamberhaving two nozzles or communicating-pipes, with one limb of said siphonin open relation to one of said nozzles, and the end or limb openinginto the said chamber, in the manner substantially as described, for thepurpose specified.

JAMES S. ORITOHLEY.

Witnesses:

J. H. BURRIDG-E, FRANK R. PRICE.

